<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片区 -->
    <el-card>
      <!-- 2.为echarts准备一个具备大小（宽高的）DOM -->
      <div id="main" style="width: 600px; height: 400px;"></div>
    </el-card>
  </div>
</template>

<script>
import echarts from 'echarts'
import _ from 'lodash'

export default {
  data() {
    return{
options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
    }
  },
  created() {
    //此时页面上的元素，已经被渲染完毕
  },
  async mounted() {
    //3.基于准备好的dom,初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'))
    const {data:res} = await this.$http.get('/reports/type/1')
    if (res.meta.status !==200) {
      return this.$message.error('获取折线图数据失败！')
    }

    //4.准备数据和配置项
    // var option = {
    //         title: {
    //             text: 'ECharts 入门示例'
    //         },
    //         tooltip: {},
    //         legend: {
    //             data:['销量']
    //         },
    //         xAxis: {
    //             data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
    //         },
    //         yAxis: {},
    //         series: [{
    //             name: '销量',
    //             type: 'bar',
    //             data: [5, 20, 36, 10, 10, 20]
    //         }]
    // }
    const result = _.merge(res.data, this.options)

    // 5.展示数据
    myChart.setOption(result)
  },
  methods: {}
}
</script>

<style>

</style>